D/2 Biological Solutions


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Quick Overview

D/2 has been successfully used to clean millions of buildings and monuments. From the White House to Arlington Cemetery, D/2 is trusted to work and keep on working when results matter.

D/2 Biological Solution is specially formulated to remove environmental pollution, dirt, and staining from biological soils such as mold, mildew, lichen, and algae from indoor and outdoor structures.

D/2 is a Biodegradable cleaner that is PH neutral and contains no salts, bleach or acids. It is highly effective for removing stains caused by biological growth on surfaces including marble, granite, limestone, masonry, concrete, wood, canvas and vinyl & aluminum siding. It will not damage glass, metal or plants.

Tested in a 6 year study and now specified by the Department of Veteran Affairs National Cemetery Administration

click here to read more on the “Evaluation of Cleaners for Government Issued Headstones”

D/2 is the only product developed for conservators by conservators

Method For Use:

Apply D/2 with a brush, roller or sprayer
Allow the undiluted D/2 to remain on the surface for 5 to 10 minutes
Apply additional D/2 to maintain a wet surface
Scrub the surface thoroughly with a non-metallic, short fibered scrub brush
Lightly mist with water and continue scrubbing
Rinse thoroughly with fresh water using a hose or sprayer

Treatment and Maintenance Program

After initial treatment of substrate, a once-a-year light spraying will help maintain a clean, stain-free surface.

NOTE: Heavy biological deposits may require repeat applications of D2 cleaner to achieve complete cleaning after detachment. Alternatively, heavy growth can be detached by manual scraping using wooden or plastic tools immediately after application.


  • masonry
  • stone
  • concrete
  • wood
  • asphalt shingles
  • vinyl & aluminum siding
  • fiberglass
  • metal
  • paint
  • canvas, etc.

Benefits and Attributes

  • Will not damage glass, metal or plants
  • PH neutral
  • Contains no salts, bleach or acids

Before and After Application for Moss build up on Stone Wall

D2 Cemetery Application Video

Discover the D2 Difference

Link to Sales Flyer

MSDS Sheet


D/2 Biological Solution

1 Quart

$ 18.95

1 Gallon

$ 45.00

5- gal pail

$ 185.00

Gallon Cases and 55 Gallon Drum pricing is available. Please call for details.